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4-6 Estimating Products

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4-6 Estimating Products

  1. 1. 4-6 Estimating Products Math Notes Number Sense 1.1
  2. 2. Skills needed... 60 x 1 = 60 60 x 1 = 60 60 x 1 = 60 60 x 1 = 60
  3. 3. Skills needed... 60 x 1 = 60 60 x 10 = 60 0 60 x 100 = 6000 60 x 1000 = 600 00
  4. 4. Skills needed...
  5. 5. Skills needed... 700 X 60
  6. 6. Skills needed... 3 zeros 700 X 60
  7. 7. Skills needed... 3 zeros 700 X 60 000
  8. 8. Skills needed... 3 zeros 700 X 60 42,000
  9. 9. Skills needed... 3 zeros 700 X 60 42,000 80 X 70
  10. 10. Skills needed... 3 zeros 700 X 60 42,000 2 zeros 80 X 70
  11. 11. Skills needed... 3 zeros 700 X 60 42,000 2 zeros 80 X 70 00
  12. 12. Skills needed... 3 zeros 700 X 60 42,000 2 zeros 80 X 70 56 00
  13. 13. Estimate $187 x 18
  14. 14. Estimate $187 x 18 $187 x 18
  15. 15. Estimate $187 x 18 Round each number to the greatest place. $187 x 18
  16. 16. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 to the nearest hundred $187 x 18
  17. 17. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 to the nearest hundred $187 x 18
  18. 18. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 to the nearest hundred $187 x 18
  19. 19. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 to the nearest hundred 1 2 3 4 5 6 7 8 $187 x 18 0 9
  20. 20. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 to the nearest hundred 1 2 3 4 5 6 7 8 $187 x 18 0 9
  21. 21. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 to the nearest hundred 1 2 3 4 5 6 7 8 $187 x 18 0 9 $200
  22. 22. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 0 9 $200
  23. 23. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 0 9 $200
  24. 24. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 0 9 $200
  25. 25. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 1 0 2 3 4 5 6 7 8 0 9 9 $200
  26. 26. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 1 0 2 3 4 5 6 7 8 0 9 9 $200
  27. 27. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 1 0 2 3 4 5 6 7 8 0 9 9 $200 20
  28. 28. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 1 0 2 3 4 5 6 7 8 0 9 9 $200 x 20 STEP THREE: Multiply using mental math
  29. 29. Estimate $187 x 18 Round each number to the greatest place. STEP ONE: Round $187 STEP TWO: Round 18 to to the nearest hundred the nearest ten 1 2 3 4 5 6 7 8 $187 x 18 1 0 2 3 4 5 6 7 8 0 9 9 $200 x 20 =$4000 STEP THREE: Multiply using mental math
  30. 30. Estimate 147 x 353
  31. 31. Estimate 147 x 353 147 x 353
  32. 32. Estimate 147 x 353 Round each number to the greatest place. 147 x 353
  33. 33. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to the nearest hundred 147 x 353
  34. 34. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to the nearest hundred 147 x 353
  35. 35. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to the nearest hundred 147 x 353
  36. 36. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 0 9
  37. 37. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 0 9
  38. 38. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 0 9 100
  39. 39. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 0 9 100
  40. 40. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 0 9 100
  41. 41. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 0 9 100
  42. 42. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 1 0 2 3 4 5 6 7 8 0 9 9 100
  43. 43. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 1 0 2 3 4 5 6 7 8 0 9 9 100
  44. 44. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 1 0 2 3 4 5 6 7 8 0 9 9 100 400
  45. 45. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 1 0 2 3 4 5 6 7 8 0 9 9 100 x 400 STEP THREE: Multiply using mental math
  46. 46. Estimate 147 x 353 Round each number to the greatest place. STEP ONE: Round 147 to STEP TWO: Round 353 to the nearest hundred the nearest hundred 1 2 3 4 5 6 7 8 147 x 353 1 0 2 3 4 5 6 7 8 0 9 9 100 x 400 = 40000 STEP THREE: Multiply using mental math
  47. 47. Estimate $27.54 x 47
  48. 48. Estimate $27.54 x 47 $27.54 x 47
  49. 49. Estimate $27.54 x 47 Round each number to the greatest place. $27.54 x 47
  50. 50. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 to the nearest tens. $27.54 x 47
  51. 51. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 to the nearest tens. $27.54 x 47
  52. 52. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 to the nearest tens. $27.54 x 47
  53. 53. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 to the nearest tens. 1 2 3 4 5 6 7 $27.54 x 47 8 0 9
  54. 54. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 to the nearest tens. 1 2 3 4 5 6 7 $27.54 x 47 8 0 9
  55. 55. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 to the nearest tens. 1 2 3 4 5 6 7 $27.54 x 47 8 0 9 $30
  56. 56. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 8 0 9 $30
  57. 57. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 8 0 9 $30
  58. 58. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 8 0 9 $30
  59. 59. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 1 0 2 3 4 5 6 7 8 8 9 0 9 $30
  60. 60. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 1 0 2 3 4 5 6 7 8 8 9 0 9 $30
  61. 61. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 1 0 2 3 4 5 6 7 8 8 9 0 9 $30 50
  62. 62. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 1 0 2 3 4 5 6 7 8 8 9 0 9 $30 x 50 STEP THREE: Multiply using mental math
  63. 63. Estimate $27.54 x 47 Round each number to the greatest place. STEP ONE: Round $27.54 STEP TWO: Round 47 to to the nearest tens. the nearest ten 1 2 3 4 5 6 7 $27.54 x 47 1 0 2 3 4 5 6 7 8 8 9 0 9 $30 x 50 =$1500 STEP THREE: Multiply using mental math

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